If they want what you’re offering, give them a full proposal. What you’ll deliver, cost, information share, and how you’ll monitor results. Your outside-the-box project is new to them too, so give them some time to change their activities if they need to.
We charged a five-figure fee for a 10-week advertising and email campaign. The goal was to get the partner 1,500 new registrations.
Our partner agreed to share their campaign data for our internal use. They knew we planned to use it to launch a new sales channel. It ended up as a win-win: they got 1800 new registrations and we got detailed information and practice running a new project.